Temperature Effects in Adhesively Bonded FRP Strengthening Applied to Steel Beams

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Steel beams can be strengthened in flexure using bonded FRP strengthening. This method relies critically upon the bonding adhesive. A typical two-part ambient cure epoxy adhesive used for strengthening work has a glass transition temperature between about 50ºC and 80ºC, and the stiffness and strength of the adhesive decrease at temperatures somewhat below the glass transition. This paper uses tests on steel beams strengthened with carbon fibre-reinforced polymer (CFRP) plates and ambient-cure epoxy adhesive to demonstrate that slip occur across the adhesive joint as the beams are warmed up. The consequences of this deformation are investigated by comparison with an analytical model of the joint's behaviour that takes into account the change in adhesive properties with temperature.
Original languageEnglish
Title of host publicationStructural Faults and Repair 2010
Place of PublicationEdinburgh
Publication statusPublished - 2010
EventStructural Faults and Repair 2010 - Edingburgh, United Kingdom
Duration: 15 Jun 201017 Jun 2010

Conference

ConferenceStructural Faults and Repair 2010
CountryUnited Kingdom
CityEdingburgh
Period15/06/1017/06/10

Keywords

  • Steel
  • strengthening
  • high temperatures
  • fibre-reinforced polymer
  • adhesive
  • bond

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